Simultaneous Removal of BOD, Nitrogen and Phosphorus in Domestic Wastewater Using Anaerobic-Aerobic Sequencing Batch Reactor Process.

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  • 嫌気・好気回分式活性汚泥方式による生活排水のＢＯＤ，窒素およびリン同時除去
  • 嫌気・好気回分式活性汚泥方式による生活排水のBOD,窒素およびリンの同時除去
  • ケンキ コウキ カイブンシキ カッセイ オデイ ホウシキ ニ ヨル セイカツ

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Abstract

In order to verify the simultaneous removal of nitrogen, phosphorus, and BOD in domestic wastewater, the experimental fullscale plant test has been developed. The experimental plant consisted of anaerobic-aerobic sequencing batch activated sludge reactor (SBR), a compact sludge thickening equipment and filtration tank. Through one year verification test by leading the wastewater discharged from apartment houses into experimental plant, following results were obtained. The average values of treated water for BOD, COD, SS, T-N and T-P were 5.0, 8.2, 3.8, 7.7 and 0.7mg·l-1, respectively, and the removal rates of them were 97.9, 91.8, 98.2, 81.0 and 82.5%, respectively. Excellent BOD, nitrogen and phosphorus removal was simultaneously achieved without any addition of carbon source for denitrification and pH conditioner such as NaOH.

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